:root {
  --bg: #0c1720;
  --panel: #112432;
  --panel-alt: #152e40;
  --text: #e9f3ff;
  --muted: #b2c6da;
  --accent: #23c483;
  --danger: #d44d52;
  --border: #26425a;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--text);
  background: radial-gradient(circle at 20% 10%, #1e3648 0%, var(--bg) 45%, #070d12 100%);
  font-family: "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", sans-serif;
}

.layout {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 16px;
  padding: 16px;
  min-height: 100vh;
}

.panel {
  background: linear-gradient(160deg, var(--panel) 0%, var(--panel-alt) 100%);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 18px;
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.28);
}

.panel-control h1 {
  font-size: 24px;
  margin: 0 0 6px;
}

.subtitle {
  margin: 0 0 14px;
  color: var(--muted);
}

.hint {
  margin: -4px 0 10px;
  color: var(--muted);
  font-size: 12px;
}

label {
  display: block;
  margin-bottom: 6px;
  font-size: 13px;
  color: var(--muted);
}

input,
select {
  width: 100%;
  height: 40px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: #0d1f2b;
  color: var(--text);
  padding: 0 10px;
  margin-bottom: 10px;
}

.grid2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.grid3 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 10px;
}

.actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 8px;
}

.mode-bar {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-bottom: 10px;
}

.btn-mode {
  height: 36px;
  background: #0f2533;
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-mode.active {
  background: #1b3a50;
  border-color: #3f6c8a;
}

.ome-builder {
  border: 1px dashed var(--border);
  border-radius: 10px;
  padding: 10px;
  margin-bottom: 10px;
}

.hidden {
  display: none;
}

.btn {
  border: none;
  border-radius: 9px;
  height: 42px;
  font-weight: 700;
  cursor: pointer;
}

.btn-primary {
  background: var(--accent);
  color: #001208;
}

.btn-danger {
  background: var(--danger);
  color: #fff;
}

.btn-secondary {
  background: #2a8db6;
  color: #031119;
}

.status {
  margin-top: 12px;
  padding: 10px;
  border-radius: 8px;
  border: 1px dashed var(--border);
  font-size: 14px;
}

.panel-stream h2 {
  margin: 0 0 10px;
}

#webrtcPlayer {
  width: 100%;
  max-height: calc(100vh - 180px);
  border-radius: 10px;
  border: 1px solid var(--border);
  background: #000;
  overflow: hidden;
  min-height: 420px;
}

#webrtcPlayer .op-player {
  width: 100%;
  height: 100%;
}

.metrics {
  margin-top: 10px;
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 980px) {
  .layout {
    grid-template-columns: 1fr;
  }
  #webrtcPlayer {
    max-height: 56vh;
    min-height: 260px;
  }
}